Water cooled insulator



Aug. 17, 1954 B, H, ROFFEE 2,686,827

WATER COLED INSULATOR Filed Nov. 30, 1944 WQ l INVENTOR. m'oa #2.022371 jojfee Patented ug. 1:7,.1'954 UNITED STATES PATENT OFFICE 2,685,827 WATER COOLED INSULATOR Barton H. Roffee, Oak

the United States of Ridge, Tenn., assignor to America as represented by the United States Atomic Energy Commission Application November 30, 1944,

3 Claims.

Serial No. 566,006

ence to the tting and the insulator so as to provide a maximum of cooling eect in the vicinity of the cooled portion of the insulator.

Another object of the invention is to provide ends of the insulator.

Further objects of the invention and numerous of its advantages will become apparent from the following detailed description and annexed drawing wherein Fig. 1 is a cross-sectional view of the Fig. 2 is a View Fig. 1.

Fig. 3 is an end View of the structure at the left end of Fig. 1.

In a preferred form of my invention I use ceramic as the material of the insulator. It is to be understood, of course, that other suitable materials might be used.

Referring to the drawings, in Fig. 1 the ceramic insulator I is shown supported from a supporting member or plate The base of the insulator comprises a circular member 3 which is secured to the plate 2 by means of screws 4 which extend taken along the line 2 2 of e in member 3. There is an eccentric groove or slot I4 cut in the member 3 and surcircumference of member 3 from the radial channel I2. The channel I3 is counter-bored a length of tube I6 lits into the at a point spaced 45 (See Fig. 2.) as shown, and

counterbore and extends outwardly into the dome-shaped member 1.

A tube or pipe l1 is connected to the circumferential channel H which is otherwise closed and sealed by a ring member I8 so that cooling medium can flow in through pipe E1 all around the channel Il into the channel l2, the channel I3, and through the tube r6 into the interior of member 1, and then out of 1 around i6 into the eccentric channel I4, thence through the channel l5 to an outlet pipe i9 as shown. (See Fig. 2.)

Numeral 20 designates a shield soldered to the member 3.

Referring to the left end of Fig. 1 the structure is somewhat similar, there being a cored hole 25 in the ceramic of the insulator and protruding into the cored hole and fastened therein by alloy 29 is a brass member 2'! having a dome shape which is soldered to an end plate 28. The end plate has secured thereto by screws as shown a ring-shaped member 29 forming a skirt, the members 28 and 29 forming a cap with the alloy forming a ange as shown between the cap and the ceramic of the insulator. The domeshaped member out portion within it, and it also has grooves or channels running around it in a plane perpendicular to its axis, these grooves being designated by numeral 30. Member 2'! also has longitudinal grooves or channels designated at 3i; the alloy ows into the grooves or channels just described. Member 21 seats in an appropriate annular groove in plate 28 and within the member 2l is a baffle 32 supported from plate 28, the baflie being mounted at an angle as shown, and its end being spaced from the end of member 21 to permit now of cooling medium around the end of the baie. Cut in the inner face of plate 28 is; an arcuate groove or slot 35 of about 60 less than 360 in angular extent. through the tube 36 (Fig. 3) which connects with a channel 3l in plate member 28 which in turn communicates with the interior of member 2l above the baiiie 32, the cooling medium ilowing around the baliie and then back to another opening in plate 26 which communicates with the arcuate channel 35, the cooling medium flowing around through this channel 39 connecting with an outlet pipe 40.

It is to be seen for cooling at both ends of the insulator and the cooling is facilitated by reason of the incoming cooling medium circulating substantially circularly at each end.

and to Fig. 3,

2 has a dome-shaped hollowed w Cooling medium is admitted f that the arrangement provides f From the foregoing those skilled in the art will observe that I have provided emcient means for cooling an insulating device whereby insulator failures caused by conditions such as enumerated above can be materially reduced. The mechanical arrangement is such as to not materially lessen the mechanical strength and eectiveness of the insulator, particularly since there is no bore or opening extending all of the way through the interior of the insulating member.

The foregoing disclosure is representative of a preferred form of my invention, and it is intended that the disclosure be interpreted in an illustrative rather than a limiting sense and that the scope of the invention be determined in accordance with the claims appended hereto.

I claim:

l. In an insulator of the stand-off type adapted to be mounted at one end, an elongated member made of insulating material and having a solid intermediate portion, said member having a central depression formed in one end, means comprising an end cap for the insulator having a member extending into said depression, said means being secured to said insulating material, and said end cap having passageways formed therein including passageways formed within said member including an inlet passageway extending to a point adjacent the inner end of said depression and an outlet passageway extending back through said end cap.

2. The structure of claim 1 wherein said member is hollow and has a transverse baffle member therein terminating short of the inner end of the member.

3. The structure of claim 1 wherein said member is hollow and one of said passageways is formed by a tube portion extending part way into said member and another passageway is formed between said tube portion and the interior of the member around the tube portion.

References Cited in the file of this patent UNITED STATES PATENTS 

